Wrench



nec, 23, 1924.

G. O. CARLSON v WRENCH v Filed Dee. e, 192:5

3mm l Patented Dec. 23, 1924.

GUSTAVE O. CARLSON, OF WETHERSFIELD, CONNECTICUT, ASSIG-NOR OF ONE-HALF TO HENRY HANSON, OF MIDDLETOWN, CONNECTICUT.

WRENCH.

Application le. December G, 1923. Serial No. 678,908.

To @ZZ whom t may cof/acera.'

Be it known that I, GUs'rAvE'O. CARLSON, a citizen of the United States, residing at Wethersfield, in the county of Hartford and State of Connecticut, have invented certain new and useful improvements in Wrenches, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to a new and improved wrench, its object being, among other things, the production of a tool of this character, having few parts of simple design, that can be economically constructed and still have the maximum strength, that may be easily and readily adjusted and wherein the parts cannot be accidentally separated when in any other than their relative assembly positions. l

To these, and other ends, my invention consists in the new and improved wrench, having` certain details of construction and combinations of parts, as will be hereinafter described and more particularly pointed out in the claims.

Referring to the drawings, in which like numerals of reference designate like parts in the several gures;

Figure 1 is a side elevation of my new and improved wrench, with one jaw in its open position;

Fig. 2 is a similar view thereof, partly in section;

Fig. 3 is an enlarged transverse sectional view thereof, taken generally upon line 3 3 of Fig. 2; and

Fig. 4 is a. fragmentary view of some of the parts when in the relative positions occupied by them during the assembly of the rocking jaw.

This improved wrench is constructed with a handle 10, tubular in shape, provided with internal threads at one end, smooth bore 12 at the other end and having a collar 13 adjacent to one end, within which is the groove 14, and upon the outside of which is a plurality of knurled surfaces 15 to insure a positive grip in the hand.

While this handle may be made in a variety of ways and shapes, as herein shown it is made from a piece of rolled tubing, with the collar 13 formed by pressure applied to the end of the handle, and the body thereof held against enlargement adjacent thereto. Thus a handle of great strength and rigidity is formed with the minimum number of operations, and at a very low cost.

A Xially movable within this handle is a sliding jaw 16 having a head 17 at one end; a sha-nk 18, which is provided with a circular back portion, of substantially the same 'dif amater as the bore 12 and a longitudinal recess 19, in its inner face, which terminates at one end in asimilar recess 2() of greater depth.

On the end of this shank is an extension shank 21 having a thread 22 thereon that engages the thread 11. n The numeral 23 designates the rocking jaw which is formed with a head 24 and a shank 25 that is of substantially the same Y sor:

Upon assembly, the shank25 lies within Y the recess 20 substantially as shown in Figure 4, and moves inwardly with the sliding jaw 16 until the shoulder 27 at the base of the head 24 engages the end of the handle 10, at which time the lug 26 is in register with the groove 14. Thereafter, the continued movement of the sliding jaw 16 forces this rocking jaw outwardly by reason of the shank 25 entering the recess 19, at which time the lug 26 enters the groove 14 and holds the rocking aw against disengagement from the handle. y

A spring 28 connected with the shank 25l exerts its tension so as to normally hold the rocking jaw in its closed position, substantially as shown in Figure 2. This spring is merely designed for normally holding the rocking jaw in its closed position and against possible rattling, but is not essential to the `operation of the device and may be omitted if desired. l

In Fig. 1, my improved wrench `is illustratedfwith the rocking jaw in its open position as it first engages the article to bef actuated by the wrench, shown herein as a the position substantially as. shown in Fig# ure 2, at which time the jaws have a firm, unyielding grip. The slight rocking movement between the open and closed positions of the rocking jaw insures a non-slip bite upon the article. The burden or strain upon the sliding jaw and handle is substantially parallel with the axis of the extension shank 2l and a straight pull upon the threads 22 and 11. j

There are minor changes and alterations that may be made within my invention, aside from those herein suggested, and I would therefore have it understood, that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of the appended claims.

Having described my invention, what I claim as new and desire to secure yby Letters Patent, is:

l. In a wrench; a handle interiorly threaded near one end; a jaw having a threaded shank near one end that engages the threads within the handle and being movably mounted within the handle by the rotation thereof, the threads upon the jaw being entirely enclosed by the handle; and a second jaw mounted in said handle at the end thereof opposite to the internal threads, having a separable, intermeshing engagement therewith that permits the second jaw to move toward and away from the jaw in a path at substantially a right angle to the shank of the jaw, said second jaw having engagement only with the jaw and handle.

2. In a wrench; a handle; a jaw movably mounted therein by the rotation of the handle; a second jaw mounted in said handle and having a separable intermeshing engagement therewith that will permit the same to move toward and away from said jaw in a path at substantially aright angle to the shank of the first-mentioned jaw without becoming disengaged therefrom, said second jaw having engagement only with the jaw and handle.

3. In a wrench; a handle; a jaw movably mounted therein by the rotationof the handle.; a. second jaw mounted in saidV handle and having a separable intermeshing engagement therewith that will permit theL same to move toward and away from said jaw in a path at substantially a right angle to the shank of the first mentioned jaw, the outward position of this second jawbeing limited by both the handle and the jaw.

4. In a three-part wrench; a handle having a groove within the walls of the bore thereof; a jaw movably mounted therein by the rotation of the handle; a second jaw within said handle and having a part thereon that projects into said groove and thereby forms the only means of connection between thev handle and second jaw.

5. In a wrench; a handle; a jaw movable therein and having a recess in one face thereof of variable depth; and a second jaw having a part thereon that projects into and remains in said recess during the relative movement of the jaws.

6. In a wrench; a handle; a jaw movable therein and having a recess of variable depth in one face thereof; a second jaw having a part thereon that projects into said recess, said aws and handle being assembled when the second jaw is in the deeper portion of said recess.

7. In a wrench; a handle; a jaw movable therein and having a recess of variable depth in one face thereof; a second jaw having a part thereon that projects into said recess, said jaws and handle being assembled when the second jaw is in the deeper portion of said recess; and means for forming an intermeshing engagement between the second jaw and handle, when the second jaw is in the shallower portion of said recess.

8. In a wrench; a handle; a jaw movable therein and having` a recess of variable depth in one face thereof; a second having a part thereon that projects into said recess, said aws and handle being assembled when the second aw is in the deeper portion of said recess; and means for forming an intermeshing engagement between the second jaw and handle, when the second jaw is in the shallower portion of' said recess, said jaws and handle being assembled when the second jaw is in the deeper port ion of the recess.

9. In a wrench; a handle; a jaw movably mounted therein by the rotation of the. handle; a second jaw mounted in sa id handle and having an int-ermesl'iing engagement therewith that will permit the same to more toward and away from said jaw in a path at substantially a right angle to the shank of the first mentioned jaw; and yielding means exerting its pressure to hold said jaw in one of its positions.

l0. In a wrench; a handle having a groove within the walls of the bore thereof; a jaw movably mounted thereon by rotation of said handle; a second aw mounted in said handle having a lug thereon that projects into said groove; and a yielding member between said aws that exerts its tension so as to hold the jaws in one of their relative positions.

ll. In a wrench; a handle having groove within the walls of the bore thereon; a jaw movably mounted therein by the rotation of the handle and having a recess in one face thereof; and a second jaw mounted in said handle and having a part thereon that projects into said groove when the secondl jaw is in one portion of therecess.

l2. In a wrench; a handle having a groove within the walls of the bore thereof; a jaw movably mounted therein bythe rotation of the handle and having a recess in one face thereof of variable depth; a second jaw mounted in said handle and having a part thereon that projects into said recess, the arrangement of the jaws and handle being such that When the second jaW is in the shalloWer portion of the recess the part upon the second jaw is Within said groove.

13. In a Wrench; a handle having a groove Within the Walls of the bore thereof; a jaw inovably mounted therein by the rotation of the handleI and having a recess in one face thereof of variable depth; a second jaw mounted in said handle and having a part thereon that projects into said recess, the arrangement of the jaws and handle being such that when the second jaw is in the shallower portion of the rec-ess the part upon said second jaw is Within said groove; and a yielding means that exerts its tension so as to maintain said part Within said groove.

14. In a Wrench; a handle having a groove within the Walls of the bore thereof; a jaw movably mounted therein by the rotation of the handle and having a recess in one face thereof of variable depth; a second jaw mounted in said handle and having a part thereon that projects into said recess, the arrangement of the javvs and handle being such that When the second jaw is in the shallower portion of the recess the part upon said second jaw is Within said groove, and When said jaw is in the deeper portion of the recess said part Will b-e disengaged from said groove.

15. In a Wrench; a handle having a groove Within the Walls of the bore thereof; a j aW movably mounted therein by the rotation of the handle and having a recess in one face thereof of variable depth; a second jaw mounted in said handle and having a part thereon that projects into said recess, the arrangement of the jaws and handle being such that When the second jaW is in the shallower portion of the recess the part upon said second jaw is Within said groove, and when said javv is in the deeper portion of the recess said part Will be disengaged from said groove and Will travel With the rstmentioned jaw.

16. In a Wrench; an interiorly threaded handle; a jaw having a shank with a back portion of substantially the same diameter as the bore of the handle and against which it has a slidingl contact said shank terminating in an extension having threads thereon which engage the interior threads of said handle; and a second aW having an intermeshing engagement with said handle and supported entirely by said handle and jaw.

17. In a Wrench; an interiorly threaded handle; a jaw having a shank With a back portion of substantially the same diameter as the bore of the handle and against Which it has a sliding contact, and a recess in the face thereof opposite to the back portion, said shank terminating in an extension shank having threads thereon Which engage the interior threads of said handle; and a second jaW having an intermeshing engagement With said handle and supported entirely by said handle and jaw.

18. In a Wrench; an interiorly threaded handle; a jaw having a shank with a back portion of substantially the same diameter as the bore of the handle and against which it has a sliding contact, and a recess of variable depth in the face thereof opposite to the back portion, said shank terminating in an extension shank having threads thereon Which engage the interior threads of said handle; and a second jaw having an intermeshing engagement with said handle and supported entirely by said handle and jaw.

19. In a Wrench; an interiorly threaded handle; a javv having a shank With a back portion of substantially the same diameter as the bore of the handle and against Which it has a sliding contact, and a recess of variable depth in the 'face thereof opposite to the back portion, the deeper portion being at that end of the recess opposite to the head of the jaw, said shank terminating in an eX- tension shank having threads thereon Which engage the interior threads of said handle; and a second jaw having an intermeshing engagement With said handle and supported entirely by said handle and j aW.

20. In a Wrench; an interiorly threaded handle; a jaw having a shank With a back portion Iof stubstantially the same diameter as the bore of the handle and against Which it has a sliding contact, and a recess With flaring Walls in the face thereof opposite to the back portion, said shank terminating in an extension shank having threads thereon Which engage thev interior threads of said handle; and a second javv having an intermeshing engagement With said handle and supported entirely by said handle and jaW.

21. In a Wrench; an interiorly threaded handle; a jaW having a shank With a back portion of substantially the same diameter as the bore of the handle and against Which it has a sliding contact said shank terminating in an extension shank having threads thereon which engage the interior threads of said handle; and a second javv having a shank of less Width than the head portion that extends parallel With the length of the jaw and projects into a recess in the said jaw by reason thereof has an intermeshing engagement With the jaw and is supported entirely by the handle and jaw.

In testimony Where-of, I have hereunto affixed my signature.

GUSTAVE O. CARLSON. 

